AM3352: AM3352BZCZ60 Uboot SPL Could not Load Uboot from MT29F4G08ABBDAHC-IT NAND flash

Yolanda Zhong

Part Number: AM3352

Hey, We uses AM3352BZCZ60 process with the MT29F4G08ABBDAHC (8G Flash)

It has UBI filesystem. After program the unit, it could not boot automatically.

but, I could boot through UART boot, or tftp kernel to boot the system. But it coud not boot automatically after power up.

It seems that SPL could not load uboot ( first volume of images).

here are all configuration settings in SPL. (these configuration settings are match to the settings used in linux kern)

#define M_NAND_GPMC_CONFIG1 0x00000800
#define M_NAND_GPMC_CONFIG2 0x00050500
#define M_NAND_GPMC_CONFIG3 0x00050401
#define M_NAND_GPMC_CONFIG4 0x04000600
#define M_NAND_GPMC_CONFIG5 0x00070909
#define M_NAND_GPMC_CONFIG6 0x84000000
#define M_NAND_GPMC_CONFIG7 0x00000f48

I even tried to create a debug code to read flash ID using readb(). it could not get response.

I would be appreciated your helps

5 months ago

0 Yolanda Zhong 5 months ago

Prodigy 230 points

uboot version 2017.03

0 Stanislav Stilyanov 5 months ago in reply to Yolanda Zhong

TI__Mastermind 25080 points

Hello Yolanda,

Please can you tell me more about your board? Is it a custom board? Is it a new design? Can you tell the sysboot pin settings? Schematics related to NAND will be helpful.

Please note that this part number is 4 Gb, not 8:

I also saw on one of the distributor's pages that this part is now End Of Life. May be you may want check this from your side.

Regards,

Stan

0 Yolanda Zhong 5 months ago

Prodigy 230 points

sorry, I put wrong flash part. The MT29F8G08ABACAH4. is 8Gb.

I think sysboot pins are correct because the SPL booting up and print out debug message. it is just hanged as trying to load image from Flash.

it uses BCH8. The controller can uart boot and usb boot. By the way, could i read raw data from flash ( manufactore ID) in SPL. just want to test the nand read function

thanks!

0 Yolanda Zhong 5 months ago in reply to Yolanda Zhong

Prodigy 230 points

SYSBOOT=0x4203d2

0 Anastas Yordanov 5 months ago in reply to Yolanda Zhong

TI__Genius 13410 points

Hi Yolanda,

Thanks for clarifying this.

The topic owner will respond tomorrow.

Thanks

Best Regards

Anastas Yordanov

0 Stanislav Stilyanov 5 months ago in reply to Yolanda Zhong

TI__Mastermind 25080 points

Hi Yolanda,

Your sysboot[15:14] settings indicate 19,2 MHz system clock. Is this correct?

Can you please try to flip sysboot[9] ECC to see if this enables NAND boot?

Thanks,

Stan

0 Hong Guan64 4 months ago in reply to Stanislav Stilyanov

TI__Guru* 78400 points

Hi Yolanda,
It looks like a new e2e was submittd on the same issue.
AM3352: uncorrectable ECC errors
I'm closing this e2e, and let's continue our discussions in the new e2e.
Best,
-Hong

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AM3352: AM3352BZCZ60 Uboot SPL Could not Load Uboot from MT29F4G08ABBDAHC-IT NAND flash